Unleashing one's inner feline is, for the most part, merely a state of mind. I am, therefore I purr.
But if you want to start practicing the physical aspects then I'd suggest you start slow by just hopping off a short stool and trying to land on your feet.
Of course, when you advance to the professional level you'll be able to wash your entire body using only the back of your hand and your own spit. But you have to master the basics long before you attempt something like that. You can really injure yourself if you don't know what you're doing!
=^..^=